Update app.py

app.py

@@ -333,7 +333,7 @@ def propagate_to_all(video_in, checkpoint, stored_inference_state, stored_frame_
         clip = ImageSequenceClip(jpeg_images, fps=fps)
         # Write the result to a file
         final_vid_output_path = "output_video.mp4"
-        video.write_videofile(output_path, codec='libx264')
+        clip.write_videofile(output_path, codec='libx264')
         return gr.update(visible=False, value=None), gr.update(value=final_vid_output_path, visible=True)